Metal dating sites

by  |  09-Jul-2017 20:39

In some cases, strips cut from metal sheet were made into wire by pulling them through perforations in stone beads.

This causes the strips to fold round on themselves to form thin tubes.

The term wire is also used more loosely to refer to a bundle of such strands, as in "multistranded wire", which is more correctly termed a wire rope in mechanics, or a cable in electricity.

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Such twisted strips can be converted into solid round wires by rolling them between flat surfaces or the strip wire drawing method.

The strip twist wire manufacturing method was superseded by drawing in the ancient Old World sometime between about the 8th and 10th centuries AD.

Although usually circular in cross-section, wire can be made in square, hexagonal, flattened rectangular, or other cross-sections, either for decorative purposes, or for technical purposes such as high-efficiency voice coils in loudspeakers.

Edge-wound In antiquity, jewelry often contains, in the form of chains and applied decoration, large amounts of wire that is accurately made and which must have been produced by some efficient, if not technically advanced, means.

Swaging is of great antiquity, possibly dating to the beginning of the 2nd millennium BCE in Egypt and in the Bronze and Iron Ages in Europe for torcs and fibulae.

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